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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Australia > Possible to use N54 mid pipe on N55 (after you remove the cats)



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      02-11-2017, 05:25 AM   #1
aaron_
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Possible to use N54 mid pipe on N55 (after you remove the cats)

So I have a N55 and am after oem n55 mid pipes. There are no n55's being wrecked but there are numerous n54's that I can Find.

Would I be able to get an n54 mid pipe, cut out the cats, weld a bit of 2 " pipe in and it would be the same as my n55 mid pipe was? Is it a perfect fit?

Any help is appreciated
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      02-11-2017, 07:30 AM   #2
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What's the point of this? Just keep your N55s in there.
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      02-11-2017, 07:43 AM   #3
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yes
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      02-11-2017, 10:00 AM   #4
titium
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you could even just leave the cats in there, they aren't that restrictive and it means you could run catless dps and not have to worry about smell / carbon monoxide.
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      02-11-2017, 11:07 AM   #5
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Or if you really didn't want cats just take it to an exhaust shop and pay like 300 for them to make new mid pipes
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      02-11-2017, 12:11 PM   #6
aaron_
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My oem mids are destroyed which is why I'm trying to find some. It's not a mod

I 100% don't want the secondary cats. I have a catless dp in there now and don't like the feel. It's rough and raw. I like the refined feel of oem catted. Willing to sacrifice power to feel as it should and not be a ricer.

Will see what an exhaust shop can do - I know there's different width pipes (and i need 2 1/4") but would all 304ss sound the same - like are there different types of 2 " pipes or are they all the same?
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      02-12-2017, 09:13 PM   #7
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Quote:
Originally Posted by aaron_ View Post
My oem mids are destroyed which is why I'm trying to find some. It's not a mod

I 100% don't want the secondary cats. I have a catless dp in there now and don't like the feel. It's rough and raw. I like the refined feel of oem catted. Willing to sacrifice power to feel as it should and not be a ricer.

Will see what an exhaust shop can do - I know there's different width pipes (and i need 2 1/4") but would all 304ss sound the same - like are there different types of 2 " pipes or are they all the same?
Don't even think about it, just take it in and say how much and let them worry about the sizes.
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      02-13-2017, 02:03 AM   #8
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Quote:
Originally Posted by EB89 View Post
Don't even think about it, just take it in and say how much and let them worry about the sizes.
I don't get it lol

But yes, going to go to a few exhaust shops and get quoted up for a "custom" oem spec mid pipe set up.

Wreckers only have n54's. Will have to modify them anyway to cut out secondary cats. They wanted $500 for the part only. Rather get a new piece made.....
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